Reappraising the Functional Implications of the Primate Visual Anatomical Hierarchy
| Autor: | Jay Hegdé, Daniel J. Felleman |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
Primates
0301 basic medicine Cognitive science Communication Hierarchy biology Computer science business.industry General Neuroscience Information flow Bayes Theorem Visual processing 03 medical and health sciences 030104 developmental biology 0302 clinical medicine biology.animal Visual Perception Animals Humans Primate Neurology (clinical) business 030217 neurology & neurosurgery Visual Cortex |
| Zdroj: | The Neuroscientist. 13:416-421 |
| ISSN: | 1089-4098 1073-8584 |
| DOI: | 10.1177/1073858407305201 |
| Popis: | The primate visual system has been shown to be organized into an anatomical hierarchy by the application of a few principled criteria. It has been widely assumed that cortical visual processing is also hierarchical, with the anatomical hierarchy providing a defined substrate for clear levels of hierarchical function. A large body of empirical evidence seemed to support this assumption, including the general observations that functional properties of visual neurons grow progressively more complex at progressively higher levels of the anatomical hierarchy. However, a growing body of evidence, including recent direct experimental comparisons of functional properties at two or more levels of the anatomical hierarchy, indicates that visual processing neither is hierarchical nor parallels the anatomical hierarchy. Recent results also indicate that some of the pathways of visual information flow are not hierarchical, so that the anatomical hierarchy cannot be taken as a strict flowchart of visual information either. Thus, while the sustaining strength of the notion of hierarchical processing may be that it is rather simple, its fatal flaw is that it is overly simplistic. NEUROSCIENTIST 13(5):416—421, 2007. DOI: 10.1177/1073858407305201 |
| Databáze: | OpenAIRE |
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